There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Which Travels Faster? Solve below famous picture riddle:

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

What is the largest number you can write with just 3 digits?

What does this rebus puzzle means ?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Can you think of any three-dimensional shape that comprises of exactly two surfaces?